| details |
Late Cretaceous |
Early Tertiary |
USSR(WSL) |
Srivastava,S.K. Systematic revision of the genus Styx Norton and Hall, 1967. |
1971 |
| details |
Senonian |
Danian |
USSR(Tomskaya Oblast) |
Srivastava,S.K. Systematic revision of the genus Styx Norton and Hall, 1967. |
1971 |
| details |
Maastrichtian |
|
North Dakota |
Bergad,R.D. North American species of the Cretaceous megaspores Balmeisporites and Monophyllosporites. |
1973 |
| details |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. |
1974 |
| details |
Santonian |
Maastrichtian |
Canada(Arctic) |
Doerenkamp,A. et al. Cretaceous and Tertiary palynomorph assemblages from Banks Island and adjacent areas (NWT). |
1976 |
| details |
Nd |
|
Nd |
Srivastava,S.K. The Cretaceous megaspore genus Ghoshispora. |
1978 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |